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APU428 Datasheet(PDF) 18 Page - Aplus Intergrated Circuits

Part # APU428
Description  4-Bit Micro-controller With LCD Driver
PDF  18 Pages
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Manufacturer  APLUS [Aplus Intergrated Circuits]
Direct Link  http://www.aplusinc.com.tw
Logo APLUS - Aplus Intergrated Circuits

APU428 Datasheet(HTML) 18 Page - Aplus Intergrated Circuits

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Instruction
Machine Code
Function
Flag/Remark
ALM X
1111 101X XXXX XXXX
X8,7,6=111: FREQ
X8,7,6=100: DC1
X8,7,6=011: PH3
X8,7,6=010: PH4
X8,7,6=001: PH5
X8,7,6=000: DC0
X5~0 PH15~10
ELC X
1111 110X XXXX XXXX
X8=1 BCLKX
X8=0 PH0
X7,6=11 BCLK/8
X7,6=10 BCLK/4
X7,6=01 BCLK/2
X7,6=00 BCLK
X5,4=11 1/1
X5,4=10 1/2
X5,4=01 1/3
X5,4=00 1/4
X3,2=11 PH5
X3,2=10 PH6
X3,2=01 PH7
X3,2=00 PH8
X1,0=11 1/1
X1,0=10 1/2
X1,0=01 1/3
X1,0=00 1/4
ELP – CLK
BCLKX
ELP – DUTY
ELC – CLK
ELC – DUTY
HALT
1111 1110 0000 0000
HALT operation
STOP
1111 1111 0000 0000
STOP operation
Symbol description
AC:
Accumulator
D:
Immediate data
ACn:
Accumulator bit-n
PC:
Program counter
X:
Address
CF:
Carry flag
Rx:
Memory of address X
Rxn:
Memory bit-n of address X
WDF:
Watchdog timer enable flag
Ry:
Memory of working register Y
HL:
Index register
BCF:
Back-up flag
BCLK:
System clock address
@HL:
Memory of index RAM
IEFn:
Interrupt enable flag
HRFn:
HALT release flag
SRFn:
Stop release enable flag
HEFn:
HALT release enable flag
SCFn:
Start condition flag
Cfq:
Clock source of frequency generator
Cch:
Clock source of chartering detector
Ctm:
Clock source of timer
TMR:
Timer overflow release flag
PDV:
Predivider
SEFn:
Switch enable flag
Lz:
LCD latch
FREQ:
Frequency generator setting value
T@HL:
Memory of index ROM
ADF:
ADC flag
CSF:
Clock source flag
DAC:
Digital-to-analog converter output signal
LBR:
Low-battery voltage reference
L:
Low address of index
H:
High address of index
RFOVF: RFC overflow flag
HT@HL: High nibble of index ROM
LT@HL: Low nibble of index ROM
Preliminary
18
Ver. 0.0
APU428



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